From what I understand, only the oligodendrocytes are affected in multiple sclerosis, and they are attacked by T cells which cross the blood-brain barrier. This leads me to two questions:
How is the ...

In an imaginary sense, If you alone were replicated into 2 so that there should now be 2 of "you" (meaning you both have the same DNA). Then let's say one of you shrunk to the size of a bacteria, and ...

Let us assume that in a human body, a mitochondrial DNA is released to extracellular environment.
We know that mtDNA inheritance is solely matrilineal.
So the question is, If your mitochondrial DNA ...

We've known for a long time now how to "add a new entry to the database," as it were, of immune responses. It's called vaccination, and it's been one of the greatest success stories in the history of ...

OK, I have rheumatoid arthritis and I've been injecting Humira 2 times a month for the last 8 months.
As far as I know rheumatoid arthritis is simply an immune system disorder which makes the immune ...

I was reading about the necessity of niche formations to adequate development of blood progenitors and this idea reminded me of the patchy inactivation of the X chromosome which followed that maybe, ...

I have learnt that our immune system distinguishes self from non-self by using MHC. So a mother during pregnancy should also develop antibodies against the fetus as it is also a genetically different ...